David, Tom and Bill:

Thanks for your input. Tom did you anchor your stakes in heavy or light soil (clay or sand/gravel?). David I'm hoping to get some first hand responses on friction loss on the addition (up to 100') 3/8" airline from other pond meisters. Bill your right again, on further inspection the airline hose is 100' and 3/8" diameter with a 7" airstone. I think your right I will secure the legs on concrete pads poured below the frost line (4' in my geographic location). Any idea on friction loss by adding up 100 feet extra airhose totalling up to 200' using 3/8" hose? Would adding only say 50' be much better or should I just use only 100' and live with the restricted distance. My tanks is approx. 1000'long (north/south) X 750'(east/west). The island are located approx in the back 1/3 north/south and 150' out of the east shoreline. Thanks for your responses.

Rowly